OS 15FP Prop Nut

Having a very hard locating a couple of prop nuts for my old 15FP's.
It's an oddball size, 7/32-32.
Apparently it was only used on these engines and has been discontinued for some time.
OS part number: OSMG7940
Doing google searches, I have found one, but I need two.
Willing to pay for it, don't expect no freebies.
Any help at all would be sincerely appreciated.